In the past I used to use Mylar for plotting out the full size body
sections used in assembling the frames . Mylar is dimensionally stable
( unlike paper ) , but is hundreds of dollars a roll and my plotter
can only plot 36" wide . This time I used a V tipped cutter on
the Shopbot router and
engraved the body plan onto a sheet of 1/8"fibrex ( about fifteen
bucks a sheet .) Plus I didn't have to align and tape together the
sheets .

The first set of frame parts cut out to the correct profile within
thousandths of an inch this time .

While I was cutting the frames I bored alignment holes into all
of the parts , so that all I had to do was tap 1/4: dowels into the
holes to pull all of the parts into alignment.